File: //sys/devices/system/cpu/hotplug/states
0: offline
1: threads:prepare
2: perf/x86:prepare
7: x86/mce:dead
8: virtio/net:dead
10: slub:dead
12: mm/writeback:dead
13: mm/vmstat:dead
14: softirq:dead
19: irq_poll:dead
20: block/softirq:dead
21: block/bio:dead
22: acpi/cpu-drv:dead
24: block/mq:dead
25: fs/buffer:dead
26: printk:dead
27: mm/memctrl:dead
28: lib/percpu_cnt:dead
29: lib/radix:dead
30: mm/page_alloc:pcp
31: net/dev:dead
32: iommu/iova:dead
35: random:prepare
36: workqueue:prepare
38: hrtimers:prepare
39: x86/x2apic:prepare
40: smpcfd:prepare
41: relay:prepare
43: RCU/tree:prepare
51: base/topology:prepare
54: trace/RB:prepare
58: timers:prepare
59: tmigr:prepare
61: fork:vm_stack_cache
62: crash/cpuhp
82: cpu:kick_ap
83: cpu:bringup
84: idle:dead
85: ap:offline
86: x86/cachectrl:starting
87: sched:starting
88: RCU/tree:dying
104: perf/x86:starting
138: smpcfd:dying
139: hrtimers:dying
140: tick:dying
143: ap:online
144: cpu:teardown
147: kvm/cpu:online
148: sched:waitempty
149: smpboot/threads:online
150: irq/affinity:online
151: block/mq:online
153: x86/intel/epb:online
154: perf:online
155: perf/x86:online
156: perf/x86/intel/uncore:online
185: tmigr:online
186: lockup_detector:online
187: workqueue:online
188: random:online
189: RCU/tree:online
190: kthreads:online
191: base/cacheinfo:online
192: x86/splitlock
193: dmar:enable_fault_handling
194: mm/writeback:online
195: mm/vmstat:online
196: padata:online
197: io-wq/online
198: topology/cpu-capacity
199: idle/intel:online
200: lib/percpu_cnt:online
201: leds/trigger:starting
202: acpi/cpu-drv:online
203: virtio/net:online
204: x86/therm:online
205: cpufreq:online
206: x86/mce:online
207: x86/microcode:online
208: x86/resctrl/cat:online:
209: printk:online
210: trace/hwlat:online
211: trace/osnoise:online
212: fs/spl_taskq:online
213: platform/x86/isst-if:online
214: hwmon/coretemp:online
215: thermal/x86_pkg:online
216: platform/x86/uncore-freq:online
217: powercap/rapl:online
235: sched:active
236: online